22-2-2013 versie 1.1

Microwave absorbers for antenna test

The microwave polystyrene absorber range is designed for typical chamber solutions such

as antenna test range and Mil STD test chambers. The Unique

absorbers is its absence of poisonous fire retardant chemicals. DMAS products have the

lowest carbon dioxide footprint in the market and are fully compliant with REACH and ROHS.

Benefits of DMAS microwave absorbers

The benefits of DMAS products are:

� Unique and enhanced product design:

� The absorber consists of a base plate and several tapers. For multiple purposes a

single taper can be exchanged instead of a complete absorber.

� Alternate taper design (vertical

� Light weight

� Compliant with clean room spec. (class 10.000)

� Uniform special carbon cell loading due proprietary EPS structure results in a more stable

performance.

� Rigidity and superior tensile strength (no dropping tips) results i

life time (>40 years).

� Resilience to humidity.

Quality control

Production of DMAS products is executed under tight quality control according to ISO

9001:2008 and ISO 14001:2004. All products of DMAS are compatible with the applicable

fire retardancy certifications.

Provisional product overview MT series

Product overview

Microwave absorbers for antenna test range and Mil STD applications

The microwave polystyrene absorber range is designed for typical chamber solutions such

as antenna test range and Mil STD test chambers. The Unique Selling Point of DMAS

absorbers is its absence of poisonous fire retardant chemicals. DMAS products have the

lowest carbon dioxide footprint in the market and are fully compliant with REACH and ROHS.

Benefits of DMAS microwave absorbers

DMAS products are:

Unique and enhanced product design:

The absorber consists of a base plate and several tapers. For multiple purposes a

single taper can be exchanged instead of a complete absorber.

Alternate taper design (vertical – horizontal) resulting in improved performance.

Compliant with clean room spec. (class 10.000)

Uniform special carbon cell loading due proprietary EPS structure results in a more stable

Rigidity and superior tensile strength (no dropping tips) results in an enhanced product

Production of DMAS products is executed under tight quality control according to ISO

9001:2008 and ISO 14001:2004. All products of DMAS are compatible with the applicable

1 van 4

Product overview

MT series

and Mil STD applications

The microwave polystyrene absorber range is designed for typical chamber solutions such

Selling Point of DMAS

absorbers is its absence of poisonous fire retardant chemicals. DMAS products have the

lowest carbon dioxide footprint in the market and are fully compliant with REACH and ROHS.

The absorber consists of a base plate and several tapers. For multiple purposes a

single taper can be exchanged instead of a complete absorber.

in improved performance.

Uniform special carbon cell loading due proprietary EPS structure results in a more stable

n an enhanced product

Production of DMAS products is executed under tight quality control according to ISO

9001:2008 and ISO 14001:2004. All products of DMAS are compatible with the applicable

22-2-2013 versie 1.1 Provisional product overview MT series 2 van 4

Microwave Absorber model MT25

The MT25 microwave polystyrene absorber is a high performance broad band absorber with

an operating frequency of 1 GHz to 110 GHz. The MT45 is designed for Antenna, RCS and

EW chamber applications. The MT25 absorber is also suited for sVSWR floor set up

configurations according for CISPR 16-1-4 testing in RF EMC semi anechoic chambers.

The MT25 consist of a single base plate and 128 tapers. The absorber dimensions are

120*60*25cm.

Specifications MT25

Spec. Description

Material Closed-cell polystyrene (EPS)

Dimensions 1200*600*250mm (l*w*h)

Weight 4.1 kg (5,7 kg/m2)

Color Dark Grey-Black

Frequency range 1 GHz – 110 GHz

Fire Retardancy ISO 11925-2 class E

Humidity resistance No deterioration from moisture

Product life >40 years

Power Handling 434V/m (500 W/m2)

*This performance is the expected performance based on the actual test results of the MT45 and MT65 model.

These results are subject to change untill the actual proto types are tested in April 2013.

0

10

20

30

40

50

60

70

100 1000 10000

Retu

rn loss (

dB

)

Frequency (MHz)

Estimated performance*MT25

22-2-2013 versie 1.1 Provisional product overview MT series 3 van 4

Microwave Absorber model MT45

The MT45 microwave polystyrene absorber is a high performance broad band absorber with

an operating frequency of 1 GHz to 110 GHz. The MT45 is designed for Antenna, RCS and

EW chamber applications.

The MT45 consist of a single base plate and 32 tapers. The absorber dimensions are

120*60*45cm (h). Upon customer request the MT45 can be equipped with two white end

caps model ECT45.

Specifications MT45

Spec. Description

Material Closed-cell polystyrene (EPS)

Dimensions 1200*600*450mm (l*w*h)

Weight 5,3 kg (7,36 kg/m2)

Color Dark Grey-Black

Frequency range 1 GHz – 110 GHz

Fire Retardancy ISO 11925-2 class E

Humidity resistance No deterioration from moisture

Product life >40 years

Power Handling 434V/m (500 W/m2)

Typical performance microwave polystyrene absorbers model MT45 and MT65

0

10

20

30

40

50

60

10 100 1000 10000

Re

turn

lo

ss (

dB

)

Frequency (MHz)

Typical performance

MT45 & MT65

MT45

MT65

22-2-2013 versie 1.1 Provisional product overview MT series 4 van 4

Microwave Absorber model MT65

The MT65 microwave polystyrene absorber is a high performance absorber with an

operating frequency of 80 MHz to 110 GHz. The MT65 is designed for typical chamber

solutions such as MIL STD, Tempest test chambers and Antenna test chambers.

The MT65 consist of a single base plate and 18 tapers. The absorber dimensions are

120*60*65cm (h). Upon customer request the MT65 can be equipped with two white end

caps model ECT65.

Specifications MT65

Spec. Description Spec. Description

Material Closed-cell polystyrene (EPS) Humidity resistance No deterioration from moisture

Dimensions 1200*600*650mm (l*w*h) Product life time >40 years

Weight 6 kg (8,2 kg/m2) Power Handling 434V/m (500 W/m2)

Color Dark Grey Performance Compliant with MIL-STD-462 / 461,

DO-160 Frequency range 80 MHz – 110 GHz

Fire Retardancy ISO 11925-2 class E

Typical performance MT65 related to the Mil STD 461 requirement

0,00

5,00

10,00

15,00

20,00

25,00

30,00

0,00E+00 5,00E+07 1,00E+08 1,50E+08 2,00E+08

MT65

Limit MIL-STD